East Berkshire’s parliamentary constituencies are not expected to change hands at the next general election according to a key election predictor – despite overhauls in this year’s local elections.

Website Electoral Calculus is currently forecasting a resounding incumbent Labour win in the Slough constituency, which has been represented by Tan Dhesi since 2017.

The site gives Labour a 100 per cent chance of winning the seat, with a predicted vote share of 67 per cent – up from 57.6 per cent in 2019.

Growth in Labour’s share of the vote would track with the current state of the opinion polls, which have consistently given Labour a double-digit lead over the Conservatives for the best part of a year.

It comes amid a double by-election win this week for Labour in Tamworth and Mid Bedfordshire, where the party overturned two large Tory majorities.

But while some Tory safe seats have been threatened by opposition parties in recent votes, Electoral Calculus predicts that both Windsor and Maidenhead will stick with the Conservatives at the next general election.

It gives the Tories a 73 per cent chance of holding Windsor, albeit with only 38.8 per cent of the forecast vote – which would be a sizeable drop from 58.6 per cent in 2019.

Incumbent MP Adam Afriyie is standing down at the election, with former Royal Borough councillor Jack Rankin set to contest the seat for the Conservatives.

Electoral Calculus also gives the Conservatives a 73 per cent chance of winning again in Maidenhead. Again, a fall in the vote share is predicted from 57.7 per cent in 2019 to a forecast 38.9 per cent.

Maidenhead’s current MP is former Prime Minister Theresa May, who has represented the seat since 1997.

The next general election is widely expected to be held in 2024, although under the Dissolution and Calling of Parliament Act 2022 it could be held as late as January 2025.